一面(いちめん)one face, one surface, the whole surface, one aspect, one side, (on) the other hand, one broad, flat object, front page (e.g. newspaper)

宇宙(うちゅう)飛行(ひこう)士(し)の月面(げつめん)着陸(ちゃくりく)は新聞(しんぶん)の一(いち)面(めん)を飾(かざ)った。

The astronaut's moon landing graced the front page of the newspaper. {one face, one surface, the whole surface, one aspect, one side, (on) the other hand, one broad, flat object, front page (e.g. newspaper)}

彼(かれ)は勤勉(きんべん)である一(いち)面(めん)、飽(あ)きっぽい性格(せいかく)でもあります。

He is diligent on one hand, but also has a tendency to get easily bored. {one face, one surface, the whole surface, one aspect, one side, (on) the other hand, one broad, flat object, front page (e.g. newspaper)}

この一(いち)面(めん)のひまわり畑(ばたけ)は、有名(ゆうめい)な観光(かんこう)スポットである。

This whole surface of the sunflower field is a famous tourist spot. {one face, one surface, the whole surface, one aspect, one side, (on) the other hand, one broad, flat object, front page (e.g. newspaper)}

私(わたし)の父(ちち)は厳(きび)しい一(いち)面(めん)、映画(えいが)を観(み)ると必(かなら)ず泣(な)いてしまうという涙脆(なみだもろ)い部分(ぶぶん)もある。

My father has a strict side to him, but on the other hand, he also has a sensitive aspect where he always ends up crying when watching movies. {one face, one surface, the whole surface, one aspect, one side, (on) the other hand, one broad, flat object, front page (e.g. newspaper)}

喧嘩(けんか)の仲裁(ちゅうさい)をする先生(せんせい)：「物事(ものごと)の一(いち)面(めん)しか見(み)ていないから、どっちが悪(わる)いか分(わ)からない…。」

Teacher mediating a fight: "Because you're only looking at one aspect of things, it's hard to tell who's in the wrong..." {one face, one surface, the whole surface, one aspect, one side, (on) the other hand, one broad, flat object, front page (e.g. newspaper)}